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kondor19780726 [428]
3 years ago
8

What does it mean for a sample to have a standard deviation of zero?

Mathematics
1 answer:
ki77a [65]3 years ago
5 0
THE ANSWER IS SUPPOSED STAY THE SAME.
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Solve the equation that models the volume of the shipping box, 8(n + 2)(n + 4) = 1,144. If you get two solutions, are they both
Hatshy [7]

Answer:

n=9\\n=-15

n=9 is reasonable.

n=-15 is not reasonable, because the volume of the shipping box can't be negative.


Step-by-step explanation:

1. Apply the Distributive property to the given equation. Then, you have:

8n^{2}+32n+16n+64=1,144\\8n^{2}+48n-1080=0

2. You obtain a quadratic equation, then you can use the quadratic formula to solve it:

n=\frac{-b+/-\sqrt{b^{2}-4ac}}{2a}\\a=8\\b=48\\c=-1080

3. Then, you obtain:

n=\frac{-48+/-\sqrt{(48)^{2}-4(8)(-1080)}}{2(8)}\\n=9\\n=-15

4. The volume of the shipping box can't be negative. Therefore, n=9 is reasonable and n=-15 is not reasonable.


6 0
3 years ago
Read 2 more answers
Please help <br> 5000 points
AnnyKZ [126]

Answer:

copy and paste that into math .way

Step-by-step explanation:

3 0
3 years ago
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Paulita reads an average of 20 pages each day.She has 6 days to read 10 to the 2 pages.Will she finish her reading in 6 days?Exp
Free_Kalibri [48]

yes

10² = 10 × 10 = 100

divide 100 by her daily average of 20

\frac{100}{20} = 5

She should be able to read 100 pages in 5 days


4 0
4 years ago
Subtract: (2x^2-7x+5)-(-6x^2-4x-2)
Wittaler [7]

Answer:

\large\boxed{D.\ 8x^2-3x+7}

Step-by-step explanation:

(2x^2-7x+5)-(-6x^2-4x-2)\\\\=2x^2-7x+5-(-6x^2)-(-4x)-(-2)\\\\=2x^2-7x+5+6x^2+4x+2\qquad\text{combine like terms}\\\\=(2x^2+6x^2)+(-7x+4x)+(5+2)\\\\=8x^2-3x+7

6 0
4 years ago
Read 2 more answers
Which equation shows an example of the associative property of addition?
Nat2105 [25]

The associative property states that we can regroup the terms of an expression and obtain the same result.

We have then:

a + (b + c) = (a + b) + c

The expression that complies with this property is given by:

(-4 + i) + 4i = -4 + (i + 4i)

Answer:

An equation that shows an example of the associative property of addition is:

a. (- 4 + i) + 4i = -4 + (i + 4i)

6 0
3 years ago
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